IB Biology HL 3.2.2 Skin and mucous membranes Question Bank
Practise IB Biology SL/HL 3.2.2 by applying skin and mucous membranes concepts to exam-style questions.
- Syllabus
- First assessment 2025
- Course
- Biology HL
- Level
- HL
Exam points
- identify the relevant biological structure, process or evidence
- apply the correct biological mechanism to the question
- evaluate the result using data, adaptation or ecological reasoning
C3.2.2—Skin and mucous membranes question 1
[Maximum number: 2]
Pathogens are disease-causing organisms.
State two of the body's primary defences to pathogens.
a. skin;
b. mucous membranes;
c. acidic/low pH of gastric juice/stomach/ lysozymes / mucus / cilia in respiratory tract;
Marking guidance:
Accept first two answers only.
2
max
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